Heating-furnace.



No. 654,969. Patented luly 3|, |900. .1. H. GILL.

HEATING FURNAGE.

(Application led Jan. 6, 190.0.;

(N0 Modl.)

wl E's UNITED STATES PATENT OFFICE.

JOSEPH H. GILL, OF NEWLCASTLE,PENNSYLVANIA, ASSIGNOR OF ONE-I-IALF TO HORACE R. NYE, OF SHARON, PENNSYLVANIA.

HEATiNG-FURNACE.

SPECIFICATION forming part ofl Letters Patent-No. 654,969, dated July 31, 1900.

Application filed January 6,1900. `Serial No. 576. (No model.)

To a/ZZ whoml it may Aconcern/.n

Be it known that I, JOSEPH H. GILL, of N o. l Frank street, New Castle, Lawrence county, Pennsylvania, have invented a new and use= Vful Improvement in Heating-Furnaces for Black Plate and Sheet VIron and Steel, of which the following is a full, clear,'and exact description. i

The object of my invention is to provide a furnace of improved construction for heating sheet metal, &c., which will avoid the'diftil culties incident to the apparatus and methods of heating heretofore commonly employed.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a vertical longitudinal section of one of my improved furnaces, the section being on the line I I of Fig. 2. Fig. 2 is a vertical cross section on the line II II of Fig. 1.

In the drawings, 2 represents the heatingchamber of the furnace, having a chargingy door 3 and an outlet-flue 4 at the front end.

5 is the combustion-chamber, which is situated under the front end of the furnacebot tom and has horizontal lilies 6 6 extending under the furnacebottom to the rear of the furnace, Where they enter the working cham ber through a flue 6', leading overa bridge` wall 7. The iioor of the working chamber, which also constitutes the roof of the combustionchamber 5 and flue 6, is faced with iiat tiles 8 8, each of which is adapted to receve the sheet or pack of sheets to be heated, and these tiles are surrounded bya gutter 9.

Coal, coke, or gas may be burned inthe combustion-chamber. l

In using the furnace the packs to be heated are placed on the tiles'8 in the usual way. The iiame from the combustionchamber imparts heat to the floor of the furnace above the combustion-chamber and above the flues 6, and the flame entering the combustioncharnber from the iue 6 heats the surface of the sheets. The part of the chamber 2 which is most heated by the iiame from above is the part 'next to the bridge-wall, and the part which isV least heated from above is the front end of the furnace; but the rear end of the chamber 2 is least heatedfrom below, and thefront end being directly overl the com- 'bustionchamber is most heated from below.

,Therefore'as the part of the chamber which is' least heated from above is most heated from below, and vice versa, the heating action of all parts of the chamber is as much as posh sible equalized, all the packs or sheets are heated to about the same degree, and the serious difficulties which result from unequal heating are obviated. Furthermore, as the floor ofthe chamber 2 on which the sheets rest is composed of liat tiles, the sheets are not marred or marked as they are when resting on a brick bottom or upon a bed of coal. 1The dirt and scale which accumulate during the heating operation is gathered in the gutters 9 and may be removed from time to'time through openings 10, formed at the ends of these gutters and communicating therewith.

The skilled mechanic may modify my in= vention within the scope of the following claims, since W'hat I claim is1 A A heating-furnace having a horizontal iioor faced with tiles and aording a fiat surface for the support of the articles to be heated,

gutters at the margin of the floor and cleanv ing-openings 10 communicating therewith; substantially as described.'

In testimony whereofl have hereunto set my hand.

Witnesses: y

FRANK L. FLYNN, WILLIAM TUCKER.

JOSEPH H. GILL. l 

